32131021320 has 48 divisors (see below), whose sum is σ = 104425820460. Its totient is φ = 8568272256.

The previous prime is 32131021319. The next prime is 32131021339. The reversal of 32131021320 is 2312013123.

32131021320 is a `hidden beast` number, since 32 + 1 + 310 + 2 + 1 + 320 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 29238948036 + 2892073284 = 170994^2 + 53778^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 32131021293 and 32131021302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44626059 + ... + 44626778.

Almost surely, 2^32131021320 is an apocalyptic number.

32131021320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32131021320 is an abundant number, since it is smaller than the sum of its proper divisors (72294799140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

32131021320 is a wasteful number, since it uses less digits than its factorization.

32131021320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89252854 (or 89252847 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 32131021320 its reverse (2312013123), we get a palindrome (34443034443).

The spelling of 32131021320 in words is "thirty-two billion, one hundred thirty-one million, twenty-one thousand, three hundred twenty".